Developer benchmark

ISEKAI TRUCK: On My Usual Way to School, a Huge TRUCK Hit Me, When I Came To, I'd Been REBORN by a Goddess, While I Was Still Lost, the Archmage Who'd Apparently Summoned Me Said I'm the Chosen HERO, So I'm Off to the GUILD First, I Guess

The title says it all. But if you insist: a first-person dungeon-crawling action RPG where you cast spells by drawing runes with your mouse. Gear up in town, descend floor by floor, defeat monsters and bosses, and make your way to the Demon King.