Motocoin

Motocoin is a cryptocurrency utilizing an innovative proof-of-play scheme where coins can only be mined by cognitive workload - playing a 2D motorbike simulation game, which is different from Bitcoin and other crypto-currencies that use a proof-of-work scheme where miners must perform difficult computations and then use proof of that work to secure coin transactions and get their reward. Motocoin was historically dominated by bots, but is currently testing a new security model that better enforces balanced play.

Network Parameters
Blocks are generated on average every 60 seconds.
The reward for solving a block starts at 20 motocoins, which is halved every 1'000'000 blocks (about two years) and stops decreasing at 0.4 motocoins per block.
Mining difficulty is adjusted every 2000 blocks through lowering the target time if blocks took less than an average of 60 seconds to generate, or raising the target time if blocks took longer than that.
≈40 million coins are to be generated during the first 12 years and ≈200,000 coins per year after.
450K premine (was partially used for rewards, the rest was sold in panic during the early days of Motocoin).