Note: I don't own anything
Idea №20 Every "Survival Game" novel ever x Worm
Instead of receiving a bullet surgery after defeating Scion, something goes wrong and Taylor is murdered. After her death, she gets a second chance. An unknown entity offers her a chance to participate in a "survival game". There are many possible rewards that she can earn, but the one that Taylor is interested in is very hard to get. Taylor wants to get back to Earth Bet, to live a normal life, but this wish is pretty expensive. Taylor has to complete different missions in different worlds scattered throughout the multiverse to earn reward points, which she can spend on pretty much anything: buying powers, upgrading her stats, learning skills, buying equipment, information and etc., even returning home...
After accepting the offer Taylor starts as a no-rank (meaning that she has no powers, not even free slots for powers and etc., she is just a normal human) and is told to prepare for a "tutorial" mission. She is given some amount of reward points (to buy whatever equipment, info and whatever else that she can afford), an hour to prepare, and then she is thrown right into the field with 9 other people. Their main goal is to survive until the tutorial is over. They can complete bonus missions and etc. to increase their score by the end of the tutorial and get additional rewards. Doing unique things will result in getting unique rewards after the end of the tutorial too. The main reward that all participants get after surviving until the end is the promotion to the rank 1 participant (meaning that they get 1 free power slot and etc.). Possible additional rewards: items, equipment, powers, extra reward points, knowledge, stat bonuses, titles (can have A LOT of different effects and even be an equivalent of an additional superpower), perks and etc.. Those who underperformed but survived can also get extra "rewards": confiscation of some amount of reward points, confiscation of an item or items, confiscation of some knowledge gained during the tutorial (or any other mission later on), a punishing title and/or perk (very hard to get rid of) and etc..
When going to a new world the participant is given about 5 missions and an almost infinite amount of hidden bonus missions scattered worldwide. After completing at least one essential mission the participant can leave the world and go for the next one, or return to their personal Nexus (a personal space where the participant can rest and access all functions of the survival game system, like Store, Auction and etc). If the participant wants to return to this world later then they will have to pay for their time there, but the participant can pick where they will appear. The chances of appearing in a new world with other participants are pretty low (less than 20%), but when it happens it is very likely that at least 4 participants will appear. Every time the participants leave the new mission world they are given 24 hours in their own Nexus for free. If the free time in Nexus wasn't all used up and the participant was given another 24 hours after returning from another new mission world then the free time will stack. After all of the free time in Nexus is used up the participant has to pay the "rent" daily. From their personal Nexus, the participants can access The Hub, an endless city that can be accessed only by the participants and the "NPCs" that manage numerous hotels, shops and etc.. The Hub is not as safe as the Nexus because the participants can attack and kill each other. There are numerous black obelisks scattered throughout The Hub that allow the participants to access the survival game systems functions outside their Nexus space. The participants are also given a black obelisk shard after appearing in The Hub that allows them to access the same system functions as the obelisk, but it takes an extra 5% reward points fee from every transaction. The participants can stay in The Hub indefinitely. Some participants stopped going to the mission worlds completely and are earning reward points either by selling their services or by hunting other participants.
No-rank to rank 1: complete the tutorial
Rank 1 to rank 2: 10 missions completed successfully, some reward points fee
Rank 2 to rank 3: 20 missions completed successfully, double the previous reward points fee
Rank 3 to rank 4: 30 missions completed successfully, double the previous reward points fee
And etc.
Missions have ranks too. G (rank 1), F (rank 2-5), E (rank 6-10), D (rank 11-15), C (rank 16-20), B (rank 21-25), A (rank 26-30), S (rank 30-40) and EX rank for rank 40+ participants. It doesn't mean that you cant complete these missions at lower ranks, it's just that it is recommended to take them at these ranks.
There is no rank limit but at some point increasing your rank becomes a waste of reward points.
All titles, skills, perks, equipment and etc. can be upgraded, sold to other participants through an auction and etc..
A really quick summary: Taylor travels the multiverse and kicks ass.
Note: again, a pretty bare-bones idea.