The 0.5.2 version of Kartridge for Mac was available as a free download on our website. The application is categorized as Lifestyle Tools. The actual developer of this free software for Mac is Kartridge.
From the developer:
Kartridge is a gaming platform from Kongregate. You will find a growing collection of indie games, including new and old favorites. You can level up by playing games to earn XP, badges, and rewards such as coupons and tokens. You can redeem tokens for games on Kartridge.
You may want to check out more Mac applications, such as BookTracker, Reunion or S90 ES Total Librarian, which might be similar to Kartridge.