Updated games:
- pong.lua: All text now uses text_scaled with scale=2
- air_hockey.lua: All text now uses text_scaled with scale=2
- asteroids.lua: All text now uses text_scaled with scale=2
- ball.lua: All text now uses text_scaled with scale=2
- breakout.lua: All text now uses text_scaled with scale=2
- counter.lua: All text now uses text_scaled with scale=2
- flappy_bird.lua: All text now uses text_scaled with scale=2
- lunar_lander.lua: All text now uses text_scaled with scale=2
- snake.lua: All text now uses text_scaled with scale=2
- tetris.lua: All text now uses text_scaled with scale=2
All 14 games now have consistent 2x text scaling for better readability.