Player Profile

Nickname:

Will be displayed on the GutheR-leaderboard. Please don't change the nickname unless you let another person play on your device. This will help researchers use the data to study predictions of replicability.

Personal Code:

⚠️ Your code doesn't match the required format.

It must be exactly 8 characters: 4 letters followed by 4 digits.
Letters (1–2): First two letters of your city of birth → e.g. Am for Amsterdam
Letters (3–4): Last two letters of your father's first name → e.g. in for Martin
Digits (5–6): Last two digits of your birth year → e.g. 93 for 1993
Digits (7–8): Day of the month you were born — always two digits, so add a leading zero for single-digit days → e.g. 04 for the 4th, not 4

Example: AMin9304

Please generate your anonymous and personal code. This will greatly help us connect your predictions if you play multiple times:

1. The first two letters of your city of birth (e.g. 'Am' for 'Amsterdam')
2. The last two letters of your father's first name (e.g. 'in' for 'Martin')
3. The last two digits of your birth year (e.g. '93' for '1993')
4. The day of the month you were born (e.g. '02' for the 2nd of June)

About You

Please answer these questions before playing for the first time.

1. What is your current professional status?

2. What is your highest level of education?

3. If you do research, what discipline are you most familiar with? (Optional)

How to Play

In this game, we present you the title and abstract of a study that has been replicated. That means, after the study you are reading about has been published, a group of researchers has tested the same claim again. Your task is to guess the outcome of the replication based on only the information you have.

💡 For every five correct predictions, you get a bonus live and your level increases. Start as a junior reviewer and see how far you can make it.

🖱️/⌨️ You can use the mouse to click on the buttons, or press 1 (Success), 2 (Failure), and the Spacebar to continue.

About the Game

Research is about truth and truth should be findable by everyone. One way to do this is to test again what others have claimed, that is, to replicate. In social science research, replications are often neglected, which is why we created this game: Our aim is for you to learn about replications in a fun and educational way.

The game uses an excerpt from the FORRT Library of Reproduction and Replication Attempts - the world's largest study-based database of replications. Note that about one third of replications in the full database show mixed results, but these are excluded from this game for simplicity. Also, a single study may appear multiple times if it has been replicated by multiple independent groups. Finally, just because a replication failed, it does not automatically mean that the original study cannot be trusted. And just because it succeeded, it does not mean that the original study was definitely right. Things are complicated, welcome to the world of research!

Data Sharing

Gameplay data (guesses, reaction times) will be shared openly for research purposes, attached only to the nickname you provide. We use this game to learn more about how people predict replication outcomes.

Credits

This game was developed by Lukas and Jessica Röseler with the help of Gemini 3.1 pro preview. The authorship order was determined by who got a higher score in the game.
Gameplay is strongly inspired by GuessTheCorrelation.
The dataset is provided by a large community of scholars maintaining the Framework for Open and Reproducible Research Training: FLoRA Database.
Journal Impact Factors are displayed neutrally to test prediction strategies and are fetched via OpenAlex (based on 2-year mean citedness).

Recommended Citation:
Röseler, L., & Röseler, J. (2026). Guess the replication [Computer game]. Retrieved from https://lukasroeseler.github.io/GuessTheReplication/

More games like this:
This project is part of the FORRT Open Research Games.

Contact:
Questions, feedback, criticism? Write us an email at lukas.roeseler [at] uni-muenster.de.

Data Quality Check

Please let us know whether you looked up any of the studies before making a prediction or whether you just randomly pressed buttons without paying much attention.

Note that this will not affect your potential position on the leaderboard and you will still get a certificate. However, we will remove this round of yours from the data analysis that is part of a research report.

Quote from the replication authors:

LEVEL UP!

+1 LIFE AWARDED! ❤️

GUESS THE REPLICATION

CERTIFICATE OF ACHIEVEMENT

predicted out of replication outcomes correctly and achieved the rank:

Want to learn more?

Never miss a replication with the Zotero Replication Checker

Learn how to conduct a replication with our free Handbook

Get to know high-quality, non-commercial academic journals that specialise on replications

Get involved and become one of over 600 contributors at FORRT

Use GutheR for teaching with our CC0 licensed slides: https://zenodo.org/records/19854040

Leaderboard (Top 10)

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Participant Consent

GUESS THEREPLICATION