Project was made from scratch in 2 days.

Create a planetary artillery arcade in pseudo 2D (i.e. 2D game in the 3D world). The player is in control of a planet, rotating around Sun. A planet can shoot rockets, rockets obey gravity (of Sun and of other planets). On collision with Sun, rocket disappears, on collision with a planet - does damage. Create a singleplayer game mode with AI players (random number from configurable min/max values).

• Planets should be visually different (and random)
• Implement 3 types of rockets with different base stats (acceleration, weight, cooldown, etc.), which are distributed randomly amongst planets
• Pause/resume feature
• Save/load feature
• UI: main menu, HUD, planet HUD (HP bar, shooting cooldown)

• You can find configurable min/max values for players count in Tools/EnemiesEditorManager window.
• Gravity of planets may not impact rockets very much, thats because planet's weight setups randomly. You can specify min/max range for it in Planet prefab/minWeight/maxWeight.