17, It's alot of work! I got pretty tired of doing nothing all day so I fixed up all of them and they are all running. Now tamagotchis take up all of my time. I check on them every thirty minutes and play one game with each, and feed etc. I separate the adults from the babies/children/teenagers, so I can tell which ones need training. I tried putting them all on a lanyard once, but that did not last long, because once on beeped, it was really frustrating trying to figure out who it was! So now I just keep them laying out, and whenever one of them beeps I can just scan over them and see who it was, and it is usually one of the youngsters because if I check on them every thirty minutes, it is most certainly not an adult; it is usually just crying, depression, or an attempted trick.
Just recently I took them all on a rather hectic scheduled camping trip and two of them died unfortunately because I can not bring myself to pause them...But a camping trip was rather stressful with all of them, and I usually stayed up very late to keep the skill points on track!