At this rate, come next week we'll be running a headline saying 'The Humble Indie Bundle 3 now includes every videogame every created.' The latest addition to its ever-expanding pay-what-you-want ranks is last year's Humble Bundle 2, and the five core games that comprised it. This means that HB3 now comprises [deep breath]:
Crayon Physics Deluxe, Cogs, VVVVVV, Hammerfight, And Yet It Moves, Steel Storm, Braid, Cortex Command, Revenge of the Titans, Machinarium and Osmos. Oh, and access to Minecraft until August 14th.
11 games and a trial, so long as you offer anything over the average HB3 payment of $5.37. The average will obviously change (and most likely increase) over time, so you might want to get in there fast if you don't reckon you'll be able to afford more than around $6. So perhaps it's not entirely pay-what-you-want for the HB3+2 omnipackage, but if you're prepared to quibble with getting these 11 games for as little as $0.49 per title, I hate you.
If you already paid above the average for HB3, you should find you've been retroactively gifted the HB2 games too.
VERY IMPORTANT: If you just want the six HB3-specific games (e.g. because you already have HB2, want to save money or simply fear sensory overload), paying any amount whatsoever still holds, however. There is no requirement whatsoever to also get HB2. If you pay less than the average, you will still receive all six HB3 games and the Minecraft trial.
As always, your payment is split between the games' various developers and charitable bodies Child's Play and the Electronic Frontier Foundation. You can set how much goes to which when you pay.