Annual Interest Rate - 183%
Minimum Age - 5 days
Maximum Age - unlimited days
BlockReward - Depends on Difficulty
Blocktarget - 2.5 minutes
Sounds Like SproutsCoin.... every 5 days staking would be 2.5% interest of staked balance instead though.
Basically with these coins that use the reward algorithm of less hashpower = more coin reward and more hashpower = less coin reward only beholds to the first early miners and makes it unfair on everyone else until dumps happen to distribute total coins while others grind it out with their hardware.