Age of Heroes II: "Horror from the Dungeon"

Here's a problem I had with my Sony Ericsson j300i; this amazing game wouldn't run! But I managed to play it on an emulator, and you know what? I recommend all Heroes fans download it to their phones!!!

It used to work (standard on one of the firmware versions – I had an E398), but after I re-flashed it, it stopped working. The phone's buttons seem to lag in the game, but otherwise, it's a great game! I want to download it again now, but the program won't let me.