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A jam submission

Protect The Planets!View game page

A 2D STG where you must protect the planets from asteroids and enemies.
Submitted by psilord — 3 hours, 17 minutes before the deadline
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Protect The Planets!'s page


CriteriaRankScore*Raw Score
Presentation - How does it look/feel?#83.1114.400
Language use - How well was Lisp incorporated into the design?#113.3944.800
Entertainment - How enjoyable/replayable is it?#152.2633.200
Creativity - How original is the idea?#161.9802.800

Ranked from 5 ratings. Score is adjusted from raw score by the median number of ratings per game in the jam.

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Not the most user-friendly installation process, but it was well worth the effort. The game is simple yet addictively enjoyable. Oh, and kudos for controller support :)


I do apologize about the poor installation process. The first-light engine doesn't yet have a decent means to produce an executable although that is a very soon planned feature. Thank you for trying it!


Yeah, no big problem. You're very welcome :)

I get the following error while starting the game.

I've followed your install instructions carefully. But the window just freezes.

My GPU is a Nvidia GTX 660.

OpenGL version string: 4.6.0 NVIDIA 390.87


It seems you have a previously checked out copy of first-light in your local-projects. If you temporarily move that to /tmp, then reregister the local projects it'll likely work. When there are two identical systems in local-projects, sbcl (and most other CLs) will get confused about which one to run. After you play the example, you can mv the original back.

This shows that First Light is capable of animation, collision detection, handling sprite sheets and using controllers which can be a rarity. The frame rate is very impressive and it seems the engine design allows for a quick expression of ideas through code. That said it would have been nice to lose at some point with a final score. :) I appreciate your firing rate many people get that wrong. You might add a button option that acts as sort of a speed limiter when pressed for traditional 2 speed movement. The movement felt a bit fast otherwise. A great first product for First Light.