• Multiplayer focused.
• The random factor.
• Improve your typing skills or get used to a new keyboard.
• A lot of personality between characters, stages, the upcoming unique music and upcoming improved graphics.
• Different ways to tweak the playstyle (more in the upcoming update).
• For both Windows and Android (different gameplay styles) in a single purchase (Android will be available in the next update).

The price is just $1 USD. It's more like a tip for me to keep working on games (the game was included in the BLM bundle so there's that as well). You can always keep playing the online demo if you don't want to pay for it. It's fine.