liamdj/bga-replays

BGA Replays

Parsed play-by-play data from BoardGameArena replays for Terra Mystica and Tokaido. One row per player per game (results), one row per player per round (Terra Mystica only), one row per scoring/economy action (moves), and, for Terra Mystica only, one row per power-leech offer and one row per player per faction bid in the setup auction.

Generated by bga-replay-parser, which scrapes raw replays from BGA and extracts structured CSVs.

Contents

terra_mystica/
  player_results.csv     # one row per player per game (63 cols)
  round_summaries.csv    # one row per player per round (55 cols)
  moves.csv              # one row per action (35 cols)
  leech_offers.csv       # one row per leech offer per offered player, incl. declines (13 cols)
  auction_bids.csv       # one row per player per faction bid in auction games (6 cols)
  setup.csv              # one row per game (game settings + final outcomes, 25 cols)

tokaido/
  player_results_base.csv     # one row per player per base game (42 cols)
  player_results_xroads.csv   # one row per player per Crossroads game (61 cols)
  moves_base.csv              # one row per action in base games
  moves_xroads.csv            # one row per action in Crossroads games

examples/
  terra_mystica_quickstart.ipynb   # load CSVs, faction win rate, plot
  tokaido_quickstart.ipynb         # load CSVs, traveler win rate, plot

Tokaido is split by base / Crossroads expansion because the two formats differ enough that mixing them adds noise (19 Crossroads-only columns would be 0 in every base row).

Stats (current snapshot)

Game	Games	Player-rows	Round-rows	Move-rows
Terra Mystica	30,582	122,328	733,956	15,897,975
Tokaido (base)	48,861	195,444	—	9,355,887
Tokaido (Crossroads)	18,526	74,104	—	4,066,793

Terra Mystica leech_offers.csv: 2,297,442 offer-rows (every game has some). auction_bids.csv: 253,099 bid-rows across 28,597 auction games.

Source: game histories of top Arena-leaderboard players on BoardGameArena (Arena and Normal mode tables). All games are 4-player. Terra Mystica games span 2020-01 to 2026-10; Tokaido games span 2016-05 to 2026-05.

How to load

Direct from the dataset over HTTPS:

import pandas as pd
URL = "https://huggingface.co/datasets/liamdj/bga-replays/resolve/main"
tm_players  = pd.read_csv(f"{URL}/terra_mystica/player_results.csv")
tok_players = pd.read_csv(f"{URL}/tokaido/player_results_base.csv")

Or git clone the dataset and read files locally (faster for repeated reads):

git clone https://huggingface.co/datasets/liamdj/bga-replays

examples/ contains two runnable quickstart notebooks (load CSVs, compute a basic win-rate aggregate, plot). Terra Mystica moves.csv is 2.2 GB (15.9M rows): read it with the category/int16/float32 dtypes shown in the Terra Mystica notebook (about 1.3 GB in memory), since pandas' default dtypes need well over 10 GB.

Schema notes

Terra Mystica player_results.csv includes a full VP breakdown (vp_round_scoring, vp_favor_tiles, vp_bonus_cards, vp_towns, vp_faction_ability, …), structures built, cult positions, total resource flow, and the tiles/cards held. starting_vp plus the vp_* components (excluding vp_generated/vp_spent/vp_converted) equals final_vp (all but 2 player-rows). vp_power_leaching is ≤ 0.

Terra Mystica round_summaries.csv captures per-round income, cult bonuses received, actions taken, power gained by source, resource flow (coins/workers/priests/power _generated, _spent, _converted), end-of-round state, and pass order. The per-round _converted columns sum to the game totals in player_results.csv.

Terra Mystica moves.csv has one row per logged action, including non-turn rows (income, scoring, leech gains, free conversions). move_number is a row sequence, not a turn index. turn_number is the turn within the round, counted across all players and restarting at 1 each round, so (table_id, round_number, turn_number) identifies one turn; every row produced during that turn shares it (the active player's conversions, action and follow-ups, and other players' leech gains). It is blank outside the action phase (setup, income, cleanup, final scoring). Free-action conversions are action_type == "convert" rows.

Terra Mystica leech_offers.csv has one row per "power via structures" offer per offered player, including declines (which leave no row in moves.csv). offer_id numbers the leech phases within a game; round_number/turn_number are the builder's turn and join to moves.csv. builder_id built or upgraded, target_id was offered power. offered is the power the target could take, cap is the extra adjacency power cut off because their bowls were too full, and n_offered is the number of targets in that phase with offered > 0. auto = 1 marks a free 1-power leech BGA took without asking. response is accept / decline / none; gained is the power taken and vp_cost the VP paid (positive). Per player, vp_cost sums to -vp_power_leaching in player_results.csv.

Terra Mystica setup.csv has one row per game: board, options, scoring tiles, bonus cards, winner, and ;-joined per-player lists. game_mode is Arena mode or Normal mode. auction_type (fast / slow / empty) is derived from the bids in the log and is the reliable auction indicator; starting_vp_setting is BGA's raw option label and is unreliable before 2023 (many 2020–22 games labelled "Adjusted by Faction" were auctions).

Terra Mystica auction_bids.csv has one row per (player, faction) with bid_starting_vp = the starting VP the player offered to accept for that faction (lower = stronger bid). Fast (sealed) auction: every player bids once on every faction. Slow (standard) auction: the row is the player's last bid on that faction, and only factions they bid on appear. is_winning_bid marks the pair the auction assigned (one per player). Join to setup.csv on table_id for auction_type.

Tokaido player_results_*.csv has a VP breakdown (vp_* columns, including vp_temple_rank) that sums to final_score (all but 9 player-rows); the preparations column flags games using the Preparations expansion. Donation routing quirk: Miko encounter VP and Devotion-amulet VP both go to vp_temple; there is no vp_amulet_used column.

Excluded games: Terra Mystica replays with variable-/volcano-faction games and the Landscapes expansion are skipped at parse time, as are Friendly-mode games. Tokaido games with fewer than 3 players are skipped.

Full data-model docs (every column, every quirk) are in the parser repo's docs/ folder (terra_mystica/parser.md, tokaido/parser.md).

Licensing & terms

The parsing, structuring, and aggregation work is licensed under CC BY-NC 4.0 — free to use and adapt for non-commercial purposes, provided you credit this dataset.

Source data is derived from BoardGameArena replays. Users are responsible for complying with BoardGameArena's Terms of Service when working with this dataset. Raw replays are not redistributed here.

Citation

If you use this dataset in a writeup, please cite:

@misc{bga-replays,
  author       = {Liam},
  title        = {BGA Replays: parsed Terra Mystica and Tokaido game data from BoardGameArena},
  year         = {2026},
  publisher    = {Hugging Face},
  url          = {https://huggingface.co/datasets/liamdj/bga-replays}
}