Turn	Date	Population	Funds	City score	Crime	Pollution
0	Jan 1900	0	$20,000	500	0	0
1	Apr 1900	0	$14,692	719	0	0
2	Jul 1900	160	$13,719	719	35	60
3	Oct 1900	480	$13,314	719	10	60
4	Jan 1901	1,140	$12,592	714	10	60
5	Apr 1901	2,100	$11,535	714	12	60
6	Jul 1901	3,240	$10,504	714	19	44
7	Oct 1901	4,900	$4,699	714	19	44
8	Jan 1902	5,360	$4,491	647	40	50
9	Apr 1902	7,380	$3,277	647	56	55
10	Jul 1902	8,960	$2,413	647	56	41
11	Oct 1902	10,020	$1,991	647	59	41
12	Jan 1903	10,860	$1,411	558	62	48
13	Apr 1903	13,520	$659	558	62	44
14	Jul 1903	15,100	$442	558	76	44
15	Oct 1903	16,980	$230	558	92	44
16	Jan 1904	18,400	$669	486	92	45
17	Apr 1904	20,580	$127	486	102	48
18	Jul 1904	22,240	$127	486	116	48
19	Oct 1904	22,120	$106	486	116	49
20	Jan 1905	21,840	$758	390	124	48
21	Apr 1905	21,720	$142	390	120	48
22	Jul 1905	22,140	$41	390	120	49
23	Oct 1905	21,640	$41	390	119	50
24	Jan 1906	22,400	$799	380	121	50
25	Apr 1906	22,420	$736	380	121	49
26	Jul 1906	22,520	$605	380	122	51
27	Oct 1906	22,640	$563	380	124	51
28	Jan 1907	23,040	$1,064	450	124	51
29	Apr 1907	22,780	$633	450	113	47
30	Jul 1907	22,700	$318	450	103	51
31	Oct 1907	23,420	$218	450	103	51
32	Jan 1908	22,420	$683	446	102	50
33	Apr 1908	21,300	$198	446	99	49
34	Jul 1908	20,640	$198	446	99	50
35	Oct 1908	20,040	$98	446	96	50
36	Jan 1909	18,840	$435	419	93	51
37	Apr 1909	17,640	$405	419	93	46
38	Jul 1909	16,340	$405	419	89	46
39	Oct 1909	14,120	$405	419	81	47
40	Jan 1910	13,040	$550	369	81	45
41	Apr 1910	12,100	$550	369	72	45
42	Jul 1910	12,800	$241	369	64	41
43	Oct 1910	12,680	$241	369	64	43
44	Jan 1911	10,940	$344	360	62	44
45	Apr 1911	9,880	$264	360	56	44
46	Jul 1911	8,560	$264	360	56	40
47	Oct 1911	8,000	$264	360	46	41
48	Jan 1912	7,720	$657	287	40	41
49	Apr 1912	6,860	$657	287	40	41
50	Jul 1912	9,040	$657	287	36	40
51	Oct 1912	11,980	$55	287	46	42
52	Jan 1913	14,220	$247	627	46	42
53	Apr 1913	16,220	$191	627	63	45
54	Jul 1913	18,500	$166	627	75	46
55	Oct 1913	21,280	$166	627	75	46
56	Jan 1914	22,660	$524	627	84	47
57	Apr 1914	23,460	$398	627	86	50
58	Jul 1914	23,980	$382	627	86	50
59	Oct 1914	24,580	$77	627	93	49
60	Jan 1915	25,520	$505	658	95	51
61	Apr 1915	25,360	$105	658	95	47
62	Jul 1915	25,760	$105	658	99	47
63	Oct 1915	25,820	$105	658	97	49
64	Jan 1916	24,260	$450	551	97	49
65	Apr 1916	23,040	$367	551	96	49
66	Jul 1916	20,340	$367	551	90	49
67	Oct 1916	18,540	$367	551	90	49
68	Jan 1917	17,420	$517	455	76	45
69	Apr 1917	15,500	$483	455	67	45
70	Jul 1917	14,960	$483	455	67	49
71	Oct 1917	14,220	$483	455	61	48
72	Jan 1918	13,520	$1,371	399	57	48
73	Apr 1918	12,720	$1,371	399	57	47
74	Jul 1918	11,720	$1,330	399	52	47
75	Oct 1918	10,760	$1,330	399	49	47
76	Jan 1919	10,220	$1,281	386	49	46
77	Apr 1919	9,360	$1,217	386	48	45
78	Jul 1919	8,820	$1,217	386	38	43
79	Oct 1919	8,220	$1,217	386	38	43
80	Jan 1920	8,060	$1,017	417	34	42

Status	Kind	Check	Detail
pass	step	environment	Environment check (snapshot, engine, key)
pass	step	launch	Launch run-city as a detached process
pass	step	supervise	Supervise in the foreground until run-city exits
pass	step	render	Timelapse video rendered
pass	step	notes	Append Notes to summary.md
pass	code_check	outputs-exist	all present
pass	code_check	sim-reached-deadline	ended Jan 1920 after 80 turns; scenario verdict None
pass	code_check	decisions-logged	80 rows for 80 turns
pass	code_check	llm-turns-valid	0/80 model turns failed
pass	code_check	video-decodes	duration 35.6s
pass	code_check	limits-respected	8.4 wall-minutes (model budget 45.0 min)
fail	judge	city-goal	population 8,060 (goal 10,000), city score 417 (score 8,060 / threshold 10,000)
pass	checklist	notes-explain-outcome	summary.md has a Notes section explaining the decline from peak 25,820 to 8,060, citing thoughts from turns 1, 64, and 68
pass	checklist	player-matches-request	result.json shows player=gpt56luna task=grow seed=2 matching runbook parameters
pass	checklist	no-silent-outage	run.log shows 80 turns with 0 llm_failures and no gaps or error stretches

GPT-5.6 Luna plays Grow a city

The city over time

Population

Funds

City score

Final map

Evaluation

Decision timeline

Ready to stop guessing if your outputs are good?