April 20th-23rd 2012 :: 10 Year Anniversary! :: Theme: Tiny World

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Planet Gravity

by Jens Nolte - Jam Entry

You are stranded on a strange little planet in space.

Gravity on the planet is sinking with an increasing speed, but you can save yourself by collecting red "magical items" which restore some gravity. The goal: Survive as long as you can!

Keyboard: WSAD + Arrow-Left/-Right + Space
Gamepad: Left Stick + Right Stick + A/RB/RT

DirectX 10 (SM 4.0) GPU
Latest DirectX 11 runtime
.Net 4.0 Client Profile

Sorry for the crappy shadow mapping, couldn't get it better in time (never did shadow mapping before).


Downloads and Links




The-Force says ...
Apr 24, 2012 @ 6:31am

I liked the visual style very much. I could only find 2 or 3 red objects :(

Jens Nolte says ...
Apr 24, 2012 @ 1:12pm

Uh, maybe I should have stated that there is always just a single item. The next appears when you collect it.

Apr 24, 2012 @ 3:23pm

I love how you fly away at the end :3

Andrew says ...
Apr 24, 2012 @ 3:44pm

Can't play getting, unhandled exception from dll files.

Jens Nolte says ...
Apr 24, 2012 @ 4:05pm

Unhandled exceptions are most probably DirectX initialization problems e.g. its missing the June 2010 DirectX End-User Runtimes or the hardware lacks some required features.
If you give me the first line of the exception I could tell you more :)

MurrayL says ...
Apr 24, 2012 @ 4:09pm

Crashes with the following exception:

System.Exception: Checkpoint too big (4065.228 units, should be under 10)

jeroenimooo says ...
Apr 24, 2012 @ 4:22pm

Oh no! -1 gravity ;p Real cool game, maybe make the gravity go up a little lower, with 2,1 gravity you can barley walk. Cool game!

Apr 24, 2012 @ 4:29pm

It wouldn't run for me :-( I want to play!

Jens Nolte says ...
Apr 24, 2012 @ 6:13pm

I added another version (1.1). The complete checkpoint code got removed (it was unused anyway), so that checkpoint-bug should be gone. Also the dynamic boxes now float up when reaching negative gravity (bugfixes ftw :D).

I have added the new version as an additional download. I am not on my home computer and working with another IDE could have introduced new problems, so if 1.1 does not work try 1.0.

@jeroenimooo: When gravity is over 1.5 it is falling at a higher rate, so you do not have to wait too long until you can walk again.

The-Force says ...
Apr 24, 2012 @ 6:46pm

The ending reminded me of this http://www.oneplusyou.com/q/v/space_vacuum

jrasmussen24 says ...
Apr 24, 2012 @ 6:58pm

I am getting a crash for both the 1.0 and 1.1 versions of the game on Win 7 Pro 64 :( (tried fullscreen and windowed with and without an Xbox controller).

Ace says ...
Apr 24, 2012 @ 7:02pm

I loved the fact that the "magical" red items are simple weights, the gravity mechanic was a nice touch and quite innovative too.
Props for the spherical gravity and loose boxes, although the road edges could've been better made to not prevent you from getting onto the roads.

Jens Nolte says ...
Apr 24, 2012 @ 7:21pm

@jrasmussen24: that means it crashes when parsing the content files... I guess you unzipped everything into a single folder? I could say more with the first line of the error message :)

@Ace: I got the final model a hour before the deadline was over and implemented it after @urahziel had gone offline (the deadline was three o'clock a.m. in germany). The best I was able to do about the roads was lowering the friction of the character (before doing that you could not even get over them at 0.8 gravity).

netmute says ...
Apr 24, 2012 @ 9:59pm

Couldn't rate because I'm using a Mac. Sorry :(

MurrayL says ...
Apr 24, 2012 @ 10:55pm

I downloaded the 1.1 version and still got the 'Checkpoint too big' exception! :(

Jens Nolte says ...
Apr 25, 2012 @ 12:52am

@MurrayL: I found a copy of the exception - this time in "hot" code. I guess I have copied it over from the checkpoint code during my sleep deprivation - not sure though :D
The check is gone in version 1.2, but I still wonder why the condition for the exception is fulfilled in the first place. Guess I will have to build a better input format for my engine urgently.
Thanks for your endurance with testing the game :)

haslettj says ...
Apr 25, 2012 @ 1:34am

I seem to be stuck inside something. I can only turn around and I see boxes "ringed" around me. Not sure what's going on.

omaha says ...
Apr 25, 2012 @ 1:51am

couldn't get it to run on my mac. really wish i had a machine to play this.

robcozzens says ...
Apr 25, 2012 @ 1:52am

I would have played it if there was a Web or OSX version.

Jens Nolte says ...
Apr 25, 2012 @ 2:29am

I see the importance of an OpenGL(which can be translated into OSX and Linux support) or a web version. The engine (well, "engine") already implements an abstraction layer around the renderer, but an actual implementation of an OpenGL renderer would require more time than I have at the moment. A web version is difficult as well: WebGL is lacking significant features even compared to OpenGL ES 2.0 which is problematic when DX10 hardware can be considered mainstream.

@haslettj: The importer seems to mess up some things on some PC's, though I can't assign a particular problem with your description. A screenshot could help?
Sorry for you not being able to play.

CuberToy says ...
Apr 25, 2012 @ 3:05am

3.19sec... Really fun to play. Though I thought that gaphics was not consistent (Low poly and no wmoothing for almost everything... but the house was near perfect). Fun non less. Great work !

Mesene says ...
Apr 25, 2012 @ 6:51am

first run -> 2:53
funny and high Mood: I was trying to grab onto anything when the gravity went negative.
Nice job!

MurrayL says ...
Apr 25, 2012 @ 1:50pm

Thanks for fixing the checkpoint problem; the game now launches, but I'm having the same problem as haslettj.

Here's a screenshot: http://i.imgur.com/BZ3RG.png

I can press WASD/Arrows to rotate around, but all I can see are these grey boxes and this big red ribbon thing.

trylle says ...
Apr 25, 2012 @ 2:41pm

Same issue here as haslettj and MurrayL

TenTonToon says ...
Apr 25, 2012 @ 2:57pm

Failed on me a couple times, but the idea is interesting, and quite fitting to the theme.

Gabriel says ...
Apr 25, 2012 @ 3:09pm

Couldn't run it...
Maybe it's the DirectX 10 requirement. Too bad, looked interesting :)

Meedoc says ...
Apr 25, 2012 @ 3:13pm

Really fun and with some replayability. It would be even better with audio and a leaderboard.

Jens Nolte says ...
Apr 25, 2012 @ 3:28pm

Ah, getting closer to a fix, that screenshot helped - thanks, MurrayL! Seems the default float.Parse() implementation is culture-specific. Changed it to use an invariant culture :)

@Meedoc: I urgently need to implement a little framework for both :D

liger13 says ...
Apr 26, 2012 @ 12:01am

Nice style. Was able to last a little over 3 minutes, but he game handled really well. Only a few strange parts were the character started randomly spinning as I moved forward.

Jens Nolte says ...
Apr 26, 2012 @ 2:35am

I found the rotation part as a whole really hard. I was pretty happy I convinced him to keep is feet on the ground :D

(though now under non-jam conditions I do not really see a problem with it - I will decide tomorrow if I start applying non-critical fixes as well)

ExciteMike says ...
Apr 27, 2012 @ 1:54pm

I really like that when you're doing well and gravity is high, getting around is more difficult and as you need the red things more badly you can also get around more easily :) Seems like you could build another layer on top of this (like, I dunno, jumping to get at floating coins) and have something super cool!

V0ID says ...
Apr 29, 2012 @ 11:06pm

I really much liked it. The planet has nice details (like the skeleton).
I disliked that the camera was able to enter the house so that it became partially back-face culled. But that's just a minor problem.
With the right sound this game will be really decent. Good work.

SLiV says ...
May 4, 2012 @ 11:47am

Great concept! Loving the way you float of to space helplessly just when you can see the next red object. I managed to get 2 my first try.

I'm unsure if it's intentional, but the dude wasn't looking were he was walking most of the time.

Gremlin says ...
May 9, 2012 @ 6:02pm

I survived 3 minutes and 5 seconds. Is there any way to win, or is it just survival?

May 12, 2012 @ 12:11am

Crashed on load, I'm using XP32.

May 12, 2012 @ 12:12am

My bad, I didn't read the requirements correctly.

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