Regarding the activation code, I couldn't find any information on a specific code "20." However, I can suggest that you check the game's official website or the platform where you purchased the game for activation code requirements and instructions.
Overall, I would give Ricochet Xtreme a rating of 4 out of 5 stars. The game's unique concept, realistic physics, and multiplayer mode make it an enjoyable experience. However, some players may find the game repetitive or limited in terms of game modes.
If you're looking for a fun, physics-based sports game with a unique concept, Ricochet Xtreme might be the game for you. With its easy-to-learn gameplay and challenging environment, it's an excellent option for players who enjoy multiplayer games and competitive gameplay.