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Hi @pele23 I purchased 50 Centaur packs during the presale several months ago and opened 25 packs.
In order to play you must have at least 1 kart-type NFT that you can find in the packs or in the market, a common kart-type nft costs $0.25.
But to play in the multiplayer mode you need fuel which is earned by staking the NFTs you don't use in game and you must have 2 SCRIPT for each NFT staked to earn fuel.
The in-game rewards are COLONY tokens and the reward depends on the amount of COLONY tokens staked in addition to in-game achievements with a similar functioning as Splinterlands regarding SPS tokens and SPS boost for battle victories.
In my next post on Moonkarts I will analyze just the play to earn elements showing my results ;)