To celebrate Sonic's ongoing 25th anniversary year, Sega has put together a Humble Bundle of Sonic games past and very-past, with a percentage of the profits going to charity.
Here's what's on offer:
Pay $1+ (about 68p): Sonic the Hedgehog, Sonic Adventure DX, Sonic 3D Blast, Sonic CD
Pay more than the average of $6 (about £4.23): Sonic the Hedgehog 4 - Episode I, Sonic & SEGA All-Stars Racing, Sonic the Hedgehog 2, Sonic Adventure 2 + Battle DLC
Pay $10+ (about £6.80): Sonic Lost World, Sonic Generations + Casino Nights DLC, Sonic the Hedgehog 4 - Episode II, Sonic & All-Stars Racing Transformed + all DLC
Pay $35+ (about £23.80): Special Sonic T-Shirt
You can also sign up for a Sonic Comic sampler.