The GOG Holiday Sale Day 16 deal is on an Indie Action Bundle of games. Buy all the games/complete the set for a 75% off discount on each or buy the games individually for 50% off each.
Price in RED is 75% off and the second price is 50% off.
Indie Action Bundle:
The Ball = $2.49 / $4.99
Unmechanical = $2.49 / $4.99
Symphony = $2.49 / $4.99
Puddle = $2.49 / $4.99
Tiny and Big: Grandpa’s Leftovers = $2.49 / $4.99
Incredipede = $3.74 / $7.49