Labyrinth Legends is an overhead action-adventure game from prolific PlayStation Network developer Creat Studios (Mushroom Wars, Cuboid) that will join PlayStation Plus' Instant Game Collection tomorrow. This is exactly the type of game I would willingly try for free and hey, if I like it enough to spend more time, that's terrific.
As for Hot Shots Golf, the Out of Bounds Complete Collection with add-ons like God of War's Kratos as a playable character is set to go on sale this week. The discounted pricing is $14.99 (and $8.99 for PS Plus folks), down from the regular charge of $24.99. Highly recommend getting this, even if you don't normally go for golf games. Zombie Driver HD will also be on sale for $7.99 / $5.99 for Plus as of tomorrow.
PlayStation Plus: Labyrinth Legends Joins the Instant Game Collection [PlayStation Blog]