There are 25 games to play total. Each High Score Mania game randomly chooses 10 to play, so you may be playing the same games after a while. For High Score Mania to appear, you can only have one controller signed in. Below is a checklist of the games you can cross off when you complete them. They are:
Connect 4x4:
Board Blasters - Shoot out 3 chips to make a Connect 4. Create combos for higher scores.
Chain Challenge - One board and 3 chips to find Connect 4’s and combos.
Find the 4’s / Blockers - Find the Connect 4’s fast. 3 rounds, blockers only.
Find the 4’s - Find the Connect 4’s with 1 chip. 3 rounds.
Score Blaster - Shoot chips but not your own color! Score for hits and Connect 4’s.
When the Chips are Down - Clear the board of your color chips by making Connect 4’s. Use as many chips as you need.
Jenga:
Bombastic Blocks - Remove bomb blocks before they explode your tower.
Action Extraction - Extract and place blocks fast to score more. Harder blocks score higher.
Hammer Time - Tap moving blocks to keep them in the tower.
Siege Tower - Catapult the block at the tower to destroy it.
Pictureka:
Silhouette Seeker - Find the picture that matches the silhouette. 3 rounds.
Blue Quick Draw - Find the picture fast. 3 rounds.
Green for Go - Find the required number of pictures, fast!
Spelling Wizard - Find the letters in the tile to spell out the word on the card.
Memory Match - Memorize the pictures then find them fast!
Operation:
The Germinator - Shoot the germs before they infect Cavity Sam.
Prepare the Patient - Swab away germs before they infect Cavity Sam.
Panic Pulse - Calm Sam’s pulse by matching his beats. Faster reflexes score more.
Balancing Act - Keep the needle in the green.
Oxygen Dash - Get the oxygen to the patient, fast!
Speed Surgery - Extract the Funatomy part. Precision and speed score more.
Bop It:
Checkpoint Challenge - Correct actions buy you extra time.
Color Bop It Chain - Copy the growing sequence of color based actions.
Bop It Chain - Copy the growing sequence of actions.
Color Confusion - Follow the color changes and do the actions.
Credit goes to Blakgravy on xbox360achievements