I recently followed the Dom8verse tutorial on shooting bullets and checking collisions, which is found in Pico8zine #3. After I finished the tutorial, I kept trying to add things with the hopes of learning more about Pico-8 game development (I usually learn best when I present myself a personal challenge). One thing lead to another and I ended up creating a very simple 2-player (unfortunately it does not have a 1-player mode) robot battle game.
This is my first Pico-8 game, so feel free to let me know what could be improved.
3/11/2018 UPDATE: I went ahead and improved the map artwork and at some basic particles when a player gets hit. Special thanks to Felice for the suggestions.
3/12/2018 UPDATE: Added a shot rate to the player's blaster. Tweaked map graphics.