We believe colluding with other players in multiplayer events is against the competitive spirit of the game; as such, we don't allow any large-scale form of collaboration. The main example of this is when players with a weak hand are elevated to the top of the leaderboard, so all other players cannot race them. When it involves groups of up to ten players, this blocks out an entire prize tier, which we deem unacceptable.
We have already banned any talk of collusion from our forum and official social media channels. While we believe there is a thin line between collusion and playing strategically, if we have firm reasons to believe that a player has been involved in this sort of high-scale collusion together with other players we may apply penalties to their accounts, ranging from removing the prizes they won to banning their account.
We trust all players will enjoy playing Top Drives in a fair manner, and may the best hand win.