Forge features a range of game modes, including draft, constructed, sealed and it even has it's own quest mode. You can also build your own decks using thousands of cards that have been programmed in. Magarena on the other hand only allows you to choose from selected patterns of which colours to use and features only 450 cards. It does however have very strong AI, something that is lacking in Forge.
Forge |
Magarena allows you to choose the level of AI opponent you play with and the hardest difficulty is quite skilled. It really doesn't give you a lot of choice other than this though. You can give yourself and opponent more or less life and reject the set of cards you are given but you never get to choose the cards outright. The Magarena interface looks a lot more professional, however I find it harder to view the important details on the cards compared to Forge. For my money at least Magarena has an annoying way of telling you what you can do by colouring the cards green or red which obscures the detail even more.
Magarena |
Both games only allow matches against AI and are a great way to play an expensive card game for free.