Grid-Based Number Merge Puzzle Simulation R package mergeGridR version 0.2.0 Provides tools to simulate, analyse, visualise, and benchmark grid-based number merge puzzles. The package implements generic grid mechanics, tile-spawning rules, merge rules, scoring functions, reproducible simulation utilities, and local 'Shiny' and 'WebGL' interfaces for interactive use. It is intended for teaching, algorithmic experimentation, and game-theoretic examples. The autoplay helpers use standard heuristic search and Monte Carlo simulation ideas described in Russell and Norvig (2021, ISBN:9780134610993) and Robert and Casella (2004, ISBN:9780387212395). Software Depends: R (>= 4.1.0) Imports: ggplot2, ggWebGL, parallel, Rcpp, shiny, tools LinkingTo: Rcpp Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Frederic Bertrand <frederic.bertrand@lecnam.net> Comprehensive R Archive Network (CRAN) Frederic Bertrand [cre, aut] (ORCID: <https://orcid.org/0000-0002-0837-8281>) GPL (>= 3) 2026-06-24 application/tgz https://CRAN.R-project.org/package=mergeGridR doi:10.32614/CRAN.package.mergeGridR