Sonic Chaos/Gigapolis Zone

Zone 1
You should encounter the first slanted platform, recognized by a blue color. If you want to collect rings drop down and collect the set of 40.

Zone 2
There are 70 rings at the bottom-left corner of the zone. The first 30 can be obtained by dropping down the slanted platform, and the other 40 by heading left and using the spring to launch yourself upward.

In this zone, any array of floor spikes can be jumped over safely.

Zone 3
The dangerous ball tower uses a simple attack pattern, but it can catch unprepared players.

Stand on the ground, midway between the screen's edge and the botnik. Wait until it launches its first ball, and when it does, jump on its head to damage it and to avoid the second attack that moves along the ground. The third ball is also lobbed high, but you can quickly make a few attacks while it regains its balls. This 3-attack pattern will repeat until it is destroyed.