This idea has been in my head forever but I have no intentions of ever doing anything with it.
It's a turn based tile combat game.
Every unit has 4 stats:
HP or health
Attack damage per hit
Defense either an amount or percentage
Range how many tiles it can attack from
Speed how many tiles it can move per turn. The target is to either wipe out the entire enemy army, or destroy the base. The army is any amount of units for the playing field. (7-9 is probably good) and per "turn" the player can move up to 3 of them. Moving includes the move of however many tiles the unit's speed it and attacking if an enemy is within range. The base has just health. There's room to expand on this, and I have to do some other stuff right now so I'll leave the rest to you
Have fun!