Blockland is fun, and it could be fun if more features were added. Here are some suggestions to make the game realistic.
Note: Skis do this, but Im talking about these also happening without skis.
1.De-mounting on a moving vehicle, causes player to tumble.
2. Crashing into a wall with a vehicle, de-mount +tumble. (happens at a certain speed)
3. Scratching a vehicles side against a wall, causes small 1x1 brick plate sparks, then they fade.
4. Falling from a height of 32, as you land, tumble
5. When a large explosion happens, player tumble.
Kill cam:
When a player or zombie kills you, the camera follows the killer (like COD4)
Enemy Radar Bars
When the players shot, red bars appear in the direction where the enemy is.