First off, welcome to AGD @Rafferty. You've come to the right place.
Orake was built using the Eclipse game engines. The engines we offer here (Orion & Intersect) are the successors to Eclipse that have been rebuilt from the ground-up and now exceed the Eclipse engines in every way.
You should find making an Orake-like game to be fairly simple, you can even obtain the same graphics they use, as long as you're ready to put in the work.
Take it from someone who used to lead development of the Eclipse engine. Even if you had the money, that would be a terrible deal, and you're going to be better off this way. The base Eclipse code isn't great. The original Orake owner recruited anyone and everyone who would even touch the code to fix stuff and make changes meaning you have all sorts of kids with little/no programming experience meddling in everything. Finding programmers willing to touch VB6 is becoming harder and harder each day. Even if it was all in perfect condition VB6 has countless crippling limitations which simply cannot be fixed/overcome. (Hence why we are rebuilding from the ground-up). You saved yourself a massive headache I promise!