I've spent a lot of time with this game, and as a free to play, I feel like it respects my time. There are a few commanders priced too high to get you to purchase gems but they are still abled to be ground out. The ability to select loadouts of blocks and commanders makes for a lot of diversity and fun. One of the few criticisms I have is that I wish there was an option to sort blocks by type, having to go through the list looking for a specific ranged block can be frustrating.