I also mostly collect games for one system (the PS2) but i don't use the search option of the database anymore (i never really liked it, it made me create a few duplicates when i started adding my games here), when i want to add a game i always browse the category of the system of that game, i find it more quick to add games that way than searching for each names one by one, it let me check all the variant that already exist and let me see if there is any duplicate (where the search option doesn't, for example if you search for SoulCalibur it won't show you any of the Soul Calibur duplicates), it also makes me discover games that i never knew before while browsing the category.