Hab hier grad me nen interessanten Post in nem amerikanischen Forum gefunden, ich poste hier ma kommentiere hier mal direkt auf englisch, um den Sinn erhalten zu lassen.
Der erste Abschnitt ist der interessante:
Perhaps you installed a 'blz' game on a 6600? This device is slightly different; it has a series 70 OS, and although it is 'binary compatible' there are some issues. Most important, it's clock can't tick any faster than 32 ticks per second. This means that the frametime of a game is either 1/32 of a second (32fps), 2/32 (16fps), 3/32 (11fps) or slower. If a game can't reach 32fps, it will immediately drop to 16, wich looks slow. N-Gages and other series 60 devices have clock granularities of 1/64th of a second, allowing for 64, 32, 21, 16fps and slower. Xyanide almost always stays at 21 or better. On the 6600, this would thus be 16, wich is considerably slower.
And about quality: There are very few companies making a serious attempt at making dedicated Symbian (not Java) titles for generic series 60 devices. There are lots of reasons for this; The N-Gage market is very small indeed, so unless you can get a lot of exposure, you're not going to get your investment back. If you enlarge your market by targetting all series 60 devices, you run into problems with telco's that can't handle .sis files (just jar/jad), poor symbian developer support, lack of examples / user groups, a difficult OS and so on.
And that's a shame, because series 60 devices are wonderful. You get to play with a 100Mhz RISC CPU and lots of memory (compared to other handhelds), a small screen (so you have more processing time per pixel), a linear framebuffer (no nasty tilestuff), 44.1Khz sound and so on. Once you have beaten the OS, it's a dreammachine. And it fits in your pocket.