They have a very good system in HK, much better than the Spore system. It runs until 1am unlike the Spore system where you see people rushing to catch the last train at 11.XX pm.
I also found the frequency of the trains better in HK.
I've never understood why the Spore trains stopped running so early? In the past I thought maybe it was because they were doing maintenance but we have found out that that was never a priority in Spore