Delver

@bealssoftware Sure! LPers are great! (his tweet, in response to this tweet)

Power-Up

I'd love to see loads of Power-Up let's plays out there and have no problem if you want to monetize them.

If you do one, be sure to drop me a link on twitter @psypsoft and I'll give it a bit of publicity.

Rogue Legacy

Can I make YouTube videos of Rogue Legacy and monetize them on my channel? Yes you can. (Quoted from their FAQs)

Zigfrak

Make it so. Official permission statement: http://zigfrak.com/lp.html

Voyage to Farland

Everyone has permission to make Let's Play videos of Voyage to Farland and post it on YouTube (or similar media site), stream on twitch.tv (or similar service) and they have full permission to monetize the video.

Home

Feel free to record Let's Plays of my games, and to monetize them. But link back to my game's website, please!

Brutal Nature

We would love for you to make lets plays or any other video of our game! if you do, please link back to BrutalNature.com in the video description!

Just Beneath the Skin

You have my permission to make, post and monetize videos of JBS. Please make sure to link my game in the description section and send me an email when posted.

IndieDB GameJolt Desura

Retromite's Games

Anyone is free to make Let's Plays and other videos of any of Retromite's games for any video site and monetize them as well. Please link back to http://retromite.com though if you do. Cheers.

Nonadecimal's Games

Make videos of my games. Make money on those videos. Become rich and powerful. Buy a yacht.

Send me your video link so I can show everyone I know. Then they'll buy my games so I can buy a yacht too and we can race them.