This is the precursor to the classic Clickpocalypse 2, and while it's a more primitive game overall, it's still a solid and enjoyable piece of incremental design. If you've played #2 you can easily see its DNA in this precursor, but it's different enough to be worth a playthrough or two. On top of upgrading your weapons (and acquiring allies) for higher DPS, this also has quests, artifact collection for semi-permanent bonuses, a side quest of collecting machine parts, and a plotline (slaughtering your way up the chain of command of a monster corporation) that takes you through the 4-6 hour playtime. There's nothing new to do after prestiging, but fun while it lasts.