I cribbed this list from Android Police , and picked out the TV compatible games. Hope I got them all!

• Rayman Fiesta Run : $0.25 from $2.99
• Anomaly 2 : $0.99 from $4.99
• Goat Simulator GoatZ : $0.99 from $4.99
• Goat Simulator MMO Simulator : $0.99 from $4.99
• Goat Simulator : $0.99 from $4.99
• This War of Mine : $4.49 from $14.99
• Riptide GP2 : $0.49 from $1.99
• Castle of Illusion : $0.99 from $9.99
• Leo's Fortune : $0.99 from $4.99
• Minecraft: Story Mode : $0.10 from $4.99
• Modern Combat 4: Zero Hour : $0.99 from $6.99
• NBA JAM : $0.10 from $4.99
• LEGO Batman: Beyond Gotham : $0.99 from $4.99 - needs Sideload Launcher
• PAC-MAN CE DX $0.99 from $4.99

Also there's a discount code for 75% off on 1 movie rental.

Edit: Pacman link

Edit 2:

Thanks for the additions! I bought Star Wars Pinball on my phone, without realizing it would work on Android TV. I found another sale on Droid-Life

• Star Wars Pinball $0.10
• Whispering Willows $1.99
• Joe Danger $0.99
• Final Fantasy III $7.99
• Final Fantasy IV $7.99
• Final Fantasy V $7.99
• Final Fantasy VI $7.99

The 12 Days of SHIELDmas 12/24 - 1/4 ( Some games are Shield Exclusive, I'm not sure what prices will be)

• The Battle of Sol
• Chariot
• Geometry Wars 3: Dimensions
• Heckabomb
• Killing Floor: Calamity
• Never Alone
• Pix the Cat
• Pure Pool
• Q.U.B.E.: Director’s Cut
• Whispering Willows

GeForce NOW Games (12/24-1/4):

• The Witcher 3: Wild Hunt – 50% off (12/24-12/28 only)
• Oceanhorn: Monster of the Uncharted Seas – 50% off
• Sublevel Zero – 25% off
• Trine 3: The Artifacts of Power – 50% off