A lot of people want to make games but don't know what to make. A lot of people also think of great game ideas but never use them because they don't know what do to with them or don't know how to make them work. Why keep those ideas locked in your head when someone else might love them!

Post any game idea here, and feel free to post as many as you want. No real rules just remember that the less you have to explain, the better. There are no limits! Video games, physical games, mind games, everything is on the table!

I'll start with one I've had for a while and really like but know someone else could do it better than I could:

Animal Crossing but you collect micro games instead of furniture. Compete with your local villagers for highscores.

If you need more examples, @moshboy has a plethora of random game idea tweets.

setting : just a typical bedroom.

theme : watching someone's growth.

core mechanic : you have one minute to decide how the someone interacts with the room by clicking on stuff. what you click on effects some internal variables that eventually is reflected in how the someone and their room evolves.

idea : basically, a game that showcases how much 1 hour in our own room may not seem like much, but this game would show how even the littlest of actions we do in our day can change the course of our life. by harmlessly having them interact with various items in the room, those changes will show in their personality, and the rooms appearance.

feels : just imagine playing a game where a naive child grows up to be something you didn't expect, based on the tiniest of interactions.

I had this idea for a game where you play as an RPG Questgiver (similar concept to Recettear), with an interface like Paper's Please. You would look on the map of the area around your farmstead/castle/city (your hub and the scale of the map upgrade as the game progresses), on the map you find something to give a quest on (perhaps bandits have attacked a neighboring village). That event has a level assigned to it, you assign an item to that objective of a similar level, and then a gold "!" appears above your head.

You wait for a (dynamically generated) hero to come by and take your quest. Complete with generated quest text and dialogue. The hero runs off and comes back a few minutes later to complete the quest. While you're waiting you can create more quests and send off more heroes. Some heroes also come by simply to drop off their "vendor trash", items that aren't worth anything to them. You use these items as rewards for lower level quests and the cycle continues.

Also: whenever we bring this up in my University's Game Design Club I always start off with one thing: Scrabble With Swords (game title: sWords with Friends)

There are some old ideas I got

1) A simple fantasy RTS with quick action/strategy on field

2) A sort of "bidding of isaac" kind of game but only one weapon, dodgeball inspired action adventure

3) Another "single weapon" game, but this time FPS:

video 1

video 2

video 3

video 4

I've made a little tool (for personal use, but I figured it might be useful) to sport random ideas. https://yaru.itch.io/yals-game-idea-generator

The basic idea is that it combines text from a bunch of random tables (concept, twist, and some flavor text), and I've tried to keep the text bits kinda sensible (most other idea generators I've seen has focused on being 'random' in the "OMG MAKE A GAME WHERE YOU ARE AN ICE CREAM THAT FIGHTS MERMAID" sense, and focus on setting instead of gameplay).

An idea I had a while ago that I eventually plan to get back to that was quite fun is a rogue like farming simulator where you gather seeds to make plants and fight demons. You can get a specfic plant that lets you place seeds in a pod that will appear in your next lifetime and enable you to gather new seeds across multiple worlds. You can then make combination plants from your seeds. In order to be able to win you would have to go through multiple worlds gathering seeds.

The latest idea that I randomly encountered was a 2d mechanic simulator. There's a series of mechanic simulator games that have a basic concept of taking apart cars and refurbishing them, and I thought it'd be fun to make an even more simplified version.

Unfortunately, I have too many other things to do right now to seriously put effort in it.

A pixel art game about a clown who makes kids cry at their parties while all the other kids laugh at the birthday boy and his mom spanks him for "being a cry-baby" and the "cool kids" get to open the presents while I sob uncontrollably!!!!   ... or something of the sort.

some sort of Dark Souls like game, but instead you are in a giant, magical city with layers and layers of districts. The bottom is the sewers, and makes the city look tiny. Remains of the old city remains there.

How about a survival platform game. The game will include multiple different levels, and on each level you would have to survive a certain amount of days. In the levels you can get rewards and resources which you can use for future levels. The game would also get progressively harder, and you have to use the resources you had from previous levels to create structures and weapons. You could also have different tiers of weapons, and rarer materials create better weapons.  On the levels you also would have to fight enemies which also  may only spawn in night or day depending on the enemy. 

That is my game idea for anyone to hopefully use!

a horror survival game where mutated tapeworm hide in food and wait to be ingested where they shall feast on the hosts body until they mature where they shall rip through the butthole and hide in more food waiting to be ingested so they can repeat the cycle again.