Fun clicker game... and very addictive :p
How many rats does it take to change a lightbulb ?
well you need 2 rats to make a farmer rat 2 farmer rats to make a miner rat...
Ok silly joke aside, i really dig the little rat sprites with the various hats, so fun to see the results fusions get you, especially when you discover that you can have multiple pairs up at any time to make mass evolutions XD
I was really curious to see all the evolutions.
Simple but very fun entry, good job :)