Cool game and interpretation of the theme! Having the tower do AOE damage really added alot, as you could summon large groups of goblins and slimes and kill them all at once for big profit. At first, I thought the goblins not dealing damage to your tower was a bug, and it took me a while to realize they were stealing gold, maybe a more clear indicator, showing -1 gold or something would clear that up. I quite liked the concept, and would definitely like to see a version with way more upgrades and content to keep up with the ever increasing rent price!