Trism ($4.99 -> $2.99) - puzzle game (review)
Band ($5.99 -> $1.99) - collection of virtual instruments (a look at Band)
Pianist ($5.99 -> $1.99) - virtual piano (YouTube video)
Guitarist ($5.99 -> $2.99) - virtual guitar (YouTube video)
Trism recently made headlines after its developer revealed he had earned $250,000 from game sales in the first two months since its release.