Bounce Heroes

Bounce Heroes mixes three things that have no business working together and somehow makes them click: idle RPG progression, merge puzzles, and roguelite runs. Your hero fights monsters with a crossbow and magic bouncing balls dropped by enemies you have already beaten, and every run feeds upgrades into the next one. Progress keeps ticking along even when the fighting is going badly, which makes it very easy to keep going. Free in your browser, no install.