Ivoryboy's gorgeous "spot the difference" game has returned with 4 Differences! Scrutinize the two pictures and click on each bit that doesn't match between the pictures. This game is miles above most other spot-the-difference games. Its visual presentation alone makes it worth a look. If you like the genre at all, you won't want to miss it.

The latest from Case, creator of Red and the original 5 Differences previously mentioned here, 6 Differences is another spot the differences game that incorporates gorgeous and surreal, animated graphics and images. Just click on a difference when you spot it, either side will work, to change the difference into a matching set.

Orange, a follow up to the first color-themed game Red, is another physics-based Flash project by designer Case. In the center of the screen sits a heavy orb. You control a mobile orange dot with the mouse and can fire shots at the nearest object. Move around the screen shooting at the orb in an attempt to push it off the screen. Get too close, though, and its gravity starts to pull you in.

Red offers up a brand new take on a classic gameplay mechanic in this simple and new, stylish arcade shooter that plays a little like Missile Command. Some of the most enjoyable games with addictive gameplay are based on very simple ideas, and Red is no different in this regard.