Well, found another site for the last games I was looking for: the Secret Agent series.
Secret Agent 1:
http://www.ellosnuncaloharian.com/juegos/view.php?ID=78
Secret Agent 2:
http://www.ellosnuncaloharian.com/juegos/view.php?ID=79
Secret Agent 3:
http://www.ellosnuncaloharian.com/juegos/view.php?ID=80
You have to register to download, but that takes three seconds. You need to click a confirmation link in the e-mail, so you do have to use a real e-mail address. Just make a new Hotmail address or something. Other than that, the site claims you have to wait 6 minutes inbetween downloads. Actually, it's more like 18 minutes. Either that or the 'clock' restarts everytime you prematurely click the download link, but it's still more than 6 minutes. I'd wait at least 10.
All this, and I don't speak a word of Spanish. Tutaj!