In ICE's HARP System: After level-up I bought skills, stats etc and had one DP left over. Can I carry it over to the next level up? Alternatively, is there something that can be gained with one point?
DPs Must Be Spent When Earned
On page 17 of the rulebook:
So, you must spend your 1 leftover point at the time you gained your new level, however you can allot that point towards the next skill or talent you'll wish to buy at your next level up, which will make that purchase cost 1 DP less at that time.