Principia

Principia$1.99

Rated 4.16/5 (3,715) —  Free Android application by Bithack

About Principia

**** 50% OFF - LIMITED TIME OFFER ****
Welcome to Principia - the world's most advanced virtual mechanics and electronics sandbox game, and the successor to the Android hit physics game Apparatus, played by over 3 million players.

Principia is an adventure game focused on advanced mechanics and electronics. Explore generated worlds or just play around with the physics, building your own contraptions in the sandbox.

*** Adventure Features ***
Build as you play, move objects around, nail pieces together, connect electronics. Need a hovercraft? Just build it.
Explore generated worlds and find rare items
Modular robots with replaceable parts
Fun tools to dig caves, cut down trees, gather resources
Cool weapons!

*** Sandbox Features ***
Create levels from scratch or base them off of a generated world
Advanced virtual electronics system
Highly tunable physics to fit your specific needs perfectly
Over 200 unique objects
Over 50 adventure items (some of them locked until you've discovered them in adventure)
Scripting and modding support

*** Community Features ***
Active community with interesting people from around the world
Weekly building contests
Fun and interesting community creations uploaded daily, from giant mechanical robots to mini games, time lapses, heavy machinery, music, adventures and much more
Download other peoples' creations to learn from them or improve them
Get a golden crown next to your name by winning a contest!

Principia is part of the "Apparatus" physics game series, brought to you by indie game developer Bithack.

How to Download / Install

Download and install Principia version 1.5.1 on your Android device!
Downloaded 10,000+ times, content rating: Not rated
Android package: com.bithack.principia, download Principia.apk

All Application Badges

Good rating
Paid
app
Android
2.2+
Bug
buster
n/a
Not
rated
Android game

Game History & Updates

What's Changed
1.5.1
* Graphics improvements
+ Melee weapons (swords, axes, and more)
+ Many new robot equipments (hard hat, pioneer armour, and more)
+ Mini spikebot
* Bugfix: proximity sensor sometimes did not detect anything
+ New decorations
* Improved SFX emitter
* Android UI Theme updated
* Various other bugsfixes
Version update Principia was updated to version 1.5.1
Version update Principia was updated to version 1.4.0.4
Price update  Price changed from $3.59 to $1.99.
Version update Principia was updated to version 1.3.0.3

What are users saying about Principia

Q70%
by Q####:

The puzzles are awesome, but i would like to see more explanations for the adventure portion. I dont know if there are any goals, other than finding stuff to build with. Or maybe a tutorial on how to play it

Q70%
by Q####:

It works perfectly when I open it but when I try to make a new world it just goes onto the home page please fix it then cos I really wanted to play this game then I will rate 5 stars! PLZZZZZZZ FIX!!!!!!! :'(

Q70%
by Q####:

Oh. My.. Gosh. IS IT REALLY ONLY IN BETA!!?? It has so much stuff though!! It already has all the stuff you could want in a complex sandbox game; TONS of mechanical tools, wood/stone/plastic/other material objects such as, spheres, beams, blocks just to name a few. There is even an ADVENTURE mode!!! Which includes, a lot of weapons, equipment, enemies, material gathering for construction pieces among other things. THERE ARE EVEN RAGDOLLS!!!!! RAAAAAGGGDOOLLLS!!!!! With all these things you could build anything you wanted. ANYTHING. And you can learn what all the things do and how they work in the puzzle mode with 31 in total puzzles. Anyway EXCELLENT job well done. Just think... What will it be like OUT of beta.......

Q70%
by Q####:

buy this game and if you get bored than it'll mean you have reached limit for your imagination and creativity. you will learn more and more every build you make and become an engineer at home :D

D70%
by D####:

But with no help concerning the adventure mode, and a level of the puzzles in which I can see no way past and has no help for it, leaving me completely unable to proceed... well, I can't exactly give it a high rating, can I? I was never able to get the motor to do anything useful in the puzzles, and the adventure mode tool things do absolutely nothing no matter what I press. There are no money objects to be found and nothing to shoot with the weapon provided, so it seems pretty much pointless.

O70%
by O####:

Everything in the game is very great. One thing that made the game crash happens in my phone when I pause the simulation or change something in the game's Settings. Only happens in a gane with terrain. I rated four for the gameplay. Please fix

Q70%
by Q####:

Took me 3 days to figure out how to build a car, im amazing. Little weird thing though, when i move the boundaries out so i have more room, the whole screen goes black. Im on samsung galaxy tab 4.

B70%
by B####:

Great game to waste time on whenever your board. Test your skills in Lua scripting or in electronic gates. Makes cars, hovercrafts, planes, and anything you can dream of. Your imagination is the limit.

Q70%
by Q####:

Its so sad that developers left the game... It has so much potential.

Q70%
by Q####:

Grame keeps crashing on my Asus MeMo Pad HD 7. Please fix or at least try to.

K70%
by K####:

Crashes on x86 devices. Great game though!

Q70%
by Q####:

I usually like games like this, so I thought I'd give it a try. It is awesome. A sandbox, miner, plat former, whatever. I would definitely give it a try. With a suggestion for a multiplayer option. HIGHLY RECOMMENDED FOR LITTLE BIG PLANET FANS!

A70%
by A####:

Community hasn't changed in a long time please help

Q70%
by Q####:

It's amazing because if you want to you can make the most complex machine or the most daring adventure level or pixel art or a basic story so that's why it's so great. Also good for learning (:

Q70%
by Q####:

This is a great game but whenever I try to play it on the computer, it freaking crashes! Also a bug is when I try to change the alpha of the pixel, it sets it back to 255! Please fix this an I'll rate this for 5 *'s! Please add more stuff like the wooden rubber band from apparatus, giant spikebot, RC GARGANTUA, Saw Wave, and more!

D70%
by D####:

PLEASE HELP. My version of principia seems a bit off. Like on level 28. The gap the robots need to walk over before they walk off the edge. Well my robots cant walk over the gap. Its too big for them they just get stuck which means i cant do this level. I have a similar glitch in an earlier level so i cant progress in the game PLZ HELP

D70%
by D####:

It works perfectly when I open it but when I try to make a new world it just goes onto the home page please fix it then cos I really wanted to play this game then I will rate 5 stars! PLZZZZZZZ FIX!!!!!!! :'(

U70%
by U####:

It runs great on my phone, but whenever I try to run it on my tablet it crashes when I start a adventure. Please fix. Love this game.

D70%
by D####:

Crashes on my tablet. I sent the report log. I know itll be a good game so ill 5 star it when fixed!

D70%
by D####:

I usually like games like this, so I thought I'd give it a try. It is awesome. A sandbox, miner, plat former, whatever. I would definitely give it a try. With a suggestion for a multiplayer option. HIGHLY RECOMMENDED FOR LITTLE BIG PLANET FANS!

D70%
by D####:

This developer has great drive, and adds many of the suggestions that the forum community has suggested, this game is amazingly huge and has a very smooth user interface. Also levels can be made and published, so people get to see your levels, and because of that there is infinite content being generated constantly! :-) :-) :-) very satisfied customer here

D70%
by D####:

Fix it! It doesn't work if I go on a level or create my own world!

B70%
by B####:

Great game to waste time on whenever your board. Test your skills in Lua scripting or in electronic gates. Makes cars, hovercrafts, planes, and anything you can dream of. Your imagination is the limit.

M70%
by M####:

My game doesn't save anything,as soon as I exit the game my saves are gone please help

U70%
by U####:

Hey uh I think little big planet stole your game. This game for PlayStation came out called little big planet and there's this other game called Minecraft idk if u heard of them (sarcasm) but they totally copied your game except, their versions of the game sucks!!! You should totally sue those wanna-bes. Great game/sandbox/app perfect for everything. Awesome do it again but all 3d or 4d or interdimensionsal next time with everything u can imagine in life and beyond! I give it 71 stars out of 11.9

D70%
by D####:

...but 1.5.1 consistently crashes before it can even open a level :( Aha: loaded an outdated .apk (2nd version?), which works fine (cheap Asus, Android 4.4.2). 5* is for the old version; still 1* for the current (1.5).

D70%
by D####:

Recently I got a new tablet and every time I try to enter to adventure mode or create mode it crashes please fix this

T70%
by T####:

Oh. My.. Gosh. IS IT REALLY ONLY IN BETA!!?? It has so much stuff though!! It already has all the stuff you could want in a complex sandbox game; TONS of mechanical tools, wood/stone/plastic/other material objects such as, spheres, beams, blocks just to name a few. There is even an ADVENTURE mode!!! Which includes, a lot of weapons, equipment, enemies, material gathering for construction pieces among other things. THERE ARE EVEN RAGDOLLS!!!!! RAAAAAGGGDOOLLLS!!!!! With all these things you could build anything you wanted. ANYTHING. And you can learn what all the things do and how they work in the puzzle mode with 31 in total puzzles. Anyway EXCELLENT job well done. Just think... What will it be like OUT of beta.......

E70%
by E####:

I love this game i have had it for a while and i still barely know how to do anything(lol) but i had recentaly got a new phone and whenever i build something it soon crashes and my saves dont save. I hope you fix these bugs because i love this game.

T70%
by T####:

I had apparatus and that was amazing but then you bring in this bad boy and it made my day, but please add a undo button on the create mode because it is very annoying when I make a little mistake e.g. accidentally move something and I cant undo it.

I70%
by I####:

This used to be my favorite game on tablet untill the update broke it. Its been way too long especially when i payed for it. :/ GALAXY tab 3

M70%
by M####:

It works perfectly when I open it but when I try to make a new world it just goes onto the home page please fix it then cos I really wanted to play this game I'm only a kid! then I will rate 5 stars! PLZZZZZZZ FIX!!!!!!! :'(

V70%
by V####:

You can build anything you like. Remember Incredibots for the PC, well this is 100000000 times better.

L70%
by L####:

Unbelievable graphics WITH high-end functionality, all on a mobile device. But I am very confused, where is the oil rig? I cannot make it at a factory!

V70%
by V####:

, from race cars to rockets, melee robot battles to mining for precious gems to build flying cities...if u can think it or dream it, u can create it here. Only problem is I forgot my username/password and can't seem to find a way to log in and share my designs

T70%
by T####:

From 5 stars to 3 stars.. Still no update.. Im still waiting for the new items and features.. Cant Uninstall because i bought it.. Pls.. Have a new update pls.

T70%
by T####:

Took me a week to understand what all the objects do but after that this quickly became my most used app.

T70%
by T####:

I LOVE THIS F***ing game! Creativity is great. Plz get this game. PLZ. IT ROCKS

T70%
by T####:

Its not letting me build or let me play others creations. Ive got a samsung galaxy S3 so please help ASAP

T70%
by T####:

Fix it! It doesn't work if I go on a level or create my own world!


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Rating Distribution

RATING
4.25
3,715 users

5

4

3

2

1