I made an EXTREMELY HARD multiplayer game. Here is how to play. There are 2 castles, with 2 treasure chests in each. You must steal both of the enemy treasure chests. To make things fun, a warlock guards each chest. You can summon [‘soldiers’, ‘archers’, ‘fire-shamans’, ‘water-shamans’, ‘earth-shamans’]
You must command every troop you summon. For the shamans, canCast is enabled, so you can effectively command them to cast their helpful spells. Fire-Shamans have flame-armor, Earth-Shamans have earthskin, Water-Shamans have haste. This applies for both you and your opponent. You also must choose the right time to steal your enemies treasure, but never forget to defend you own. If both players fail to capture the enemy treasure within 60 seconds, the game is a tie. Have some fun here. But you must know for loops, while loops, if, else, canCast, arrays, append, findNearest, command, defining, modulo, functions and I probably forgot to mention some other stuff.
@Hydrobolic, this is a nice and hard game, you might like it.