W.T.F. is a tower defence game for PICO-8 where you play a wizard defending your tower from the necromancer Arthrax and his minions over ten days.
Each day brings bigger waves of skeletons, imps, rams and catapults, and you fight them off with fireballs you can curve by holding down as you move, plus spells like Firewall and Lightning Bolt that drain your mana. After each battle you pick an artifact for your familiars to fetch.
Source