Koiwa Railway Test Line

A Roblox experience owned by 小岩鉄道 / Koiwa Railway.

SimulatorENtrain simulationrailwayTokyo Metro

Description (written by the developer; not a statement by this register)

It is possible to drive 6 stations and 5 sections down to the sky salt. You must have had your account created for more than 30 days to join. Also, you can't drive a train unless you join the community. Please go to the community page from the developer's column and join. Be careful, there is a possibility of one-shot ban for tampering or annoying behavior. Some of the materials used include "Tokyo Metro Sound Material" by keihin3311, BVE Workshop, "Sound Reader," and Mc_1323.

Last updated by the developer 10 Aug 2026, 16:46 UTC.

playing (measured 10 Aug 2026, 18:33 UTC)

174,467

lifetime visits

82%

liked (323 👍 / 73 👎)

865

favourites (5.0 per 1k visits)

26 April 2025

created (per Roblox)

Play on Roblox →

Live players over time

Growth

Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.

Measurement log — every players count we have recorded
Measured (UTC)	Players	Change
10 Aug 2026, 18:33	0	first reading

Concurrent players at each of our measurements (insert-on-change).

Like ratio over time

Growth

2 measurements spanning 10 days, net +1. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 81–82 and does not start at zero.

Measurement log — every % liked count we have recorded
Measured (UTC)	% liked	Change
25 Aug 2026, 06:00	82	+1
15 Aug 2026, 05:53	81	first reading

Percentage of votes that are likes, at each of our measurements. A falling line is a game losing its crowd’s goodwill.